Guo Xian-Hou, Hu Lin, Xu Mei-Ling, Chen Mei-Xia, Ma Zhi-Hao, Li Sheng, Cong Xing-Shun, Li Fenghai, Wei Xian-Yong
Engineering and Technology Institute of Lunan Coal Chemical Engineering, Zaozhuang University, Zaozhuang 277160, Shandong, China.
Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China.
ACS Omega. 2023 Feb 24;8(9):8201-8209. doi: 10.1021/acsomega.2c04625. eCollection 2023 Mar 7.
A middle/low-temperature coal tar (M/LTCT) was obtained from a low-temperature carbonization plant in Shaanxi, China. The M/LTCT was separated into light components and coal tar pitch through extraction. A series of alkanes, aromatic hydrocarbons, oxygen-containing arenes (OCAs), and nitrogen-containing arenes were fractionated from light components by medium-pressure preparative chromatography with gradient elution using petroleum ether and ethyl acetate. They were analyzed using a gas chromatography-mass spectrometer (GC-MS) and a Fourier transform infrared spectrometer. The OCAs were analyzed by a Fourier transform Orbitrap MS (quadrupole exactive Orbitrap mass spectrometer), and the molecular distribution of the - species was studied. OCAs are mainly oxygen-containing aromatic compounds, including aromatic phenols, furans, alkoxy aromatic hydrocarbons, aromatic ethers, aromatic aldehydes, aromatic ketones, and aromatic acids. The position of the oxygen atom on the aromatic ring and the condensation form of the aromatic ring are studied.
中低温煤焦油（M/LTCT）取自中国陕西的一家低温碳化厂。通过萃取将中低温煤焦油分离为轻质组分和煤焦油沥青。采用石油醚和乙酸乙酯梯度洗脱的中压制备色谱法从轻质组分中分离出一系列烷烃、芳烃、含氧化芳烃（OCA）和含氮芳烃。使用气相色谱-质谱联用仪（GC-MS）和傅里叶变换红外光谱仪对其进行分析。通过傅里叶变换轨道阱质谱仪（四极杆精确轨道阱质谱仪）对含氧化芳烃进行分析，并研究了其分子分布。含氧化芳烃主要是含氧芳香族化合物，包括芳香酚、呋喃、烷氧基芳烃、芳香醚、芳香醛、芳香酮和芳香酸。研究了氧原子在芳香环上的位置以及芳香环的缩合形式。
